With a precise measurement of 400mV this calibration fluid is included with every Pinpoint ORP Monitor and Pinpoint ORP Controller. Occasional retesting with this fluid will keep your readings dead-on…

These come in single-use plastic envelope packets, and they are extremely accurate and field portable. Each packet contains enough fluid for a complete calibration (about 30 ml) and is intended to be …

These come in single-use plastic envelope packets, and they are extremely accurate and field portable. Each packet contains enough fluid for a complete calibration (about 30 ml) and is intended to be …

These come in single-use plastic envelope packets, and they are extremely accurate and field portable. Each packet contains enough fluid for a complete calibration (about 30 ml) and is intended to be …

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Some products, due to weight or size of the item, require additional shipping charges. These items are indicated by the " " symbol.

If you want to know how much your shipping costs will be, just add the item to your shopping cart and your shipping costs will be adjusted to reflect the additional shipping charges. You can then decide if you wish to order the item or not.

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About Us

Mail Order Pet Supplies (or MOPS as we're often referred to) was created in 1996 with the objective of delivering affordable prices to
Tropical Fish Hobbyists! Over the years we have used our warehousing, logistic and electronic capabilities to bring pond, reptile, bird and other pet products
to our customers. Through MOPS - Aquarium Supplies we are offering high-quality, brand name Aquarium products including filters, heaters, pumps, lighting, nutrition and much more for the Tropical Fish Hobbyist.